Tyent Ultra Filter Set: UCE (fits 9 or 11 plate under counter water ionizers) IMPORTANT! Before ordering, please check sticker on back of unit (under sink). See example photo left. This item is correct if your sticker reads: UCE Best Water Ionizer Filtration in the World! .01 Micron - Same Micron as Kidney Dialysis Machines. Dual Set Filters to 99.9% Purity Primary ACF Fiber Active Carbon Filter Removes Rust, Dregs, Chlorine, VOCs Plus Secondary Composite Ceramic Filter with Ion Ceramic to Create Electrolytes